18SP546* Ã…Â“ Install DDEC II to DDEC IV Wire Harness and ... - ddcsn

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DDEC IV DDEC II/III CWC Rated @RPM Other @RPM FT·LB @RPM Inj. P/N Inj. P/N HP HP 6N4D-7275 6N4D-6309 5234935 5235605 N/A 6N4M-6149 235 350 1800 1250 1200 N/A 6N4M-6153 239 320 1800 1250 1200 N/A 6N4M-6167 354 320/350 1800 1250 1200 6N4D-7275 6N4D-6310 5234935 5235605 N/A 6N4M-6214 414 365 1800 1350 1200 N/A 6N4M-6215 413 350 1800 1350 1200 N/A 6N4M-6203 371 325 1800 1350 1200 N/A 6N4M-6216 415 325/350 1800 1350 1200 6N4D-7275 6N4D-6311 5234935 5235605 N/A 6N4M-6154 240 320 1800 1150 1200 N/A 6N4M-6157 243 285 1800 1150 1200 N/A 6N4M-6371 478 285/320 1800 1150 1200 6N4D-7275 6N4D-6312 5234935 5235605 N/A 6N4M-6148 234 320 2100 350 1800 1250 1200 6N4D-7275 6N4D-7127 5234935 5235605 6N4M-7815 6N4M-6916 1261 357 2100 400 1800 1350 1200 6N4D-7274 6N4D-6313 5234935 5235605 6N4M-7811 6N4M-6374 433 450 2100-1800 1450 1500-1200 6N4M-7812 6N4M-6211 416 430 2100-1800 1450 1500-1200 6N4M-7813 6N4M-6200 253 425 2100-1800 1450 1200 6N4M-7814 6N4M-6372 479 425/450 2100-1800 1450 1200 6N4D-7272 6N4D-6314 5234970 5235695 6N4M-7804 6N4M-6212 417 430 1800 1450 1500-1200 6N4M-7805 6N4M-6164 250 400 1800 1450 1200 6N4M-7806 6N4M-6166 252 365 1800 1450 1200 N/A 6N4M-6213 359 365/400 1800 1450 1200 6N4D-7272 6N4D-6315 5234940 5235600 6N4M-7804 6N4M-6212 417 430 1800 1450 1500-1200 6N4M-7805 6N4M-6164 250 400 1800 1450 1200 6N4M-7806 6N4M-6166 252 365 1800 1450 1200 6N4M-7807 6N4M-6213 418 365/430 1800 1450 1200 6N4D-7273 6N4D-6316 5234940 5235600 6N4M-7808 6N4M-6161 247 400 2100 425 1800 1450 1200 6N4M-7809 6N4M-6165 251 365 2100 1450 1200 6N4M-7810 6N4M-6202 373 365/400 2100 1450 1200 Table 2 1991-1993 Series 60 DDEC II to DDEC IV Conversion – On-Highway Trucks with Manual Transmissions 18SP546 (Rev) Page 4 of 8
DDEC II to DDEC IV Conversion Cruise Control Switch Wiring Modifications Figure 3 illustrates a typical DDEC II cruise control wiring schematic. Wiring modifications to the Cruise Enable Switch and the Set/Coast Switch are required whenever a DDEC II to DDEC IV conversion is made on a vehicle using the DDEC II cruise control feature. Figure 4 Cruise Control Wiring Schematic after Modification Testing of Cruise Control Switch and Wiring Figure 3 Typical DDEC II Cruise Control Wiring Schematic Remove the wire identified as DDEC circuit #542 from the Set/Coast Switch. At a convenient point, splice circuit #542 into the cruise control switched ground circuit. Cruise control switched ground is the circuit that is “open” when the Cruise Enable Switch is turned OFF and “grounded” when the Cruise Enable Switch is turned ON. If necessary, use a volt-ohm meter to verify the circuit before splicing in circuit #542. Depending on the application, the switched ground circuit may be identified as DDEC circuit #558 or a branch of DDEC battery ground, such as circuit #953A, #953B, or #953C, etc. See Figure 4. To speed up the testing of cruise control switches, quick check tables have been developed. These tests are to be run with the ignition ON, and the engine not running. A DDR / DDDL must be plugged into the connector. All three quick check tables must be completed to properly check the cruise control wiring and switches. See Tables 3, 4 and 5. NOTE: When all tests pass, the unit is ready for road testing. LOSS OF VEHICLE CONTROL To avoid injury from the loss of vehicle control, do Not use cruise control under these conditions: • When it is not possible to keep the vehicle at a constant speed (on winding roads, in heavy traffic, in traffic that varies in speed, etc.) • On slippery roads (wet pavement, ice-or snow-covered roads, loose gravel, etc.) 18SP546 (Rev) Page 5 of 8
Page 1 and 2: 18SP546* - Install DDEC II to DDEC
Page 3: Powernet Engine Order Entry, Change
Page 7 and 8: Figure 5 18SP546 (Rev) Page 7 of 8

18SP546* Ã…Â“ Install DDEC II to DDEC IV Wire Harness and ... - ddcsn

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